Table 2. Clinical diagnostic criteria for neurofibromatosis type 2.

Main criteria	Additional criteria
Bilateral vestibular schwannomas or	Unilateral vestibular schwannoma plus any two of the following: meningioma, glioma, schwannoma, or juvenile posterior lenticular opacities or
First-degree relative with neurofibromatosis type 2 plus  1. Unilateral vestibular schwannomas or  2. Any two of the following: Meningioma, glioma, schwannoma, or juvenile posterior lenticular opacities	At least two meningiomas plus  1. Unilateral vestibular schwannoma or  2. Any two of: glioma, neurofibroma, schwannoma, and cataract